Furnace insulation



NW. 6, w23.

y 1,473,296 C. R. KLINE FURNACE INSULATION Filed Nov. '7

INVENTOR Patented Nov. W23.

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CHARLES ,KLINEL OF READING, PENNSYLVANIA.

FURNACE INSULATION.

Application led November 7, 1919. Serial No. 336,420.

To all whom may concern.

Be it known that I, CHARLES R. KLINE, a citizen of the United States, residing at Reading, in the county of Berks and State l of Pennsylvania, have invented certain new and useful Improvements in Furnace Insulations, of which the following is a specification.

My invention relates to heating furnaces,

and particularly to improved means for avoiding wasteful radiation of heat from the firing-door front thereof. It is fully set forth in connection with the accompanying drawings and the novel features are specifically pointed out in the claims.

My prior Patent No. 1,319,096 issued October 21, 1919 provided for accomplishing this same purpose by means especially applicable to new furnaces constructed with special provision therefor. An important feature of my present invention is its ready adaptability to old furnaces of varying construction, great numbers of which are kept in long continued use with undesired radiation of heat and consequent waste of fuel.

Fig. 1 is a front view of a heating furnace having my invention applied thereto; a portion of the hinged door covering being broken away to clearly show the seating framing which is fixed to the furnace front.

Fig. 2 is sectional view on the line 2-2 of Fig. 1.

My invention is applicable to old furnaces of any ordinary construction; a well known rectangular form (being indicated for illustration, in which a single firing doorV 10 is hinged at 11, 11 to the front 12, and two cleaning doors 13 and 14 are similarly hinged above it, these doors affording access respectively to openings into the fire chamber and to passages connecting therewith. The outer surface is covered with insulating material 15, extending on to the front 12 as indicated, but affording no protection to the more or less highly heated door surfaces.

In applying my invention I provide the front portion of the furnace with a skeleton framing 20 surrounding the doorlopening or openings and adapted to form a `seating for a movable door covering. This framing 2O is preferably secured tightly against the insulating material on the furnace' front, as by means of straps 21, 21 extending around the furnace or a portion thereof. The fram,- ing 20 is ordinarily made of metal, but may be provided with a facing 22 of insulating material, fixed thereto, as by means of angle irons 23, so as to provide an insulating seating for the door covering.

As indicated in Figs. 1 and 2 this door covering is formed as an outer door, single or divided as desired, independently hinged to the framing 20 at 31, 31, and adapted to serve as a swinging supplemental furnace front having its edge portions 32, 32 seating tightly against the framing 20 when closed so as to form an insulating enclosure for the furnace doors 10, 13, 14, and to permit ordinary operation of the latter when opened.

It will be apparent that the insulating covering seats against the framing 2O so as to cut off wasteful radiation of heat from the door surfaces during operation of the furnace. The detail construction set forth may obviously be varied within the spirit of the invention as defined in the claims.

What I claim is:

1. The combination of a furnace having a front and aI door therefor, a skeleton framing having an opening therein aligning with saidl door, and top and bottom and vertical side walls, means for securing said framing against said furnace front, an outer supplemental door independently hinged to one of the walls of said framing and forming a supplemental furnace front, and an inner insulating lining secured to the inner surface of said outer supplemental door and having its inner edges adapted to seat against said top and bottom and side walls of said framing when closed, thereby preventing heat radiation from the entire furnace front.

2. The combination of a furnace having a front, and upper and lower doors therefore, a skeleton framing havingupper and lower openings therein aligning with said doors, and top and bottom and vertical side walls, straps having their front ends secured to said framing and their rear ends passing around said furnace and secured together,

an outer door independently hinged to one l of the Walls of said framing and forming'a supplemental furnace front, and an inner .insulating Alining secured to the inner surface of said outer supplemental door and having its inner edges adapted to seat Y against said top and bottom and side Walls of said framing wheny closed, said outer 5 supplemental door inclosing said 'upperfand lowe'ndors and the entire, Vfurnace front 1 and preventing heat radiation theietrom.`Y

In testimony whereof I afxiny signature,

` CHARMSv R'. KLINE.V 

